

* {
    margin: 0;
    padding: 0;
}

ul {
    list-style: none;
}

html, body {
    height: 100%;
    background-color: #f3f5f7;
}

a {
    text-decoration: none;
}

.clearfix:after {
    content: '';
    clear: both;
    display: block;
}

ul {
    list-style: none;
}

header {
    height: 100px;
    overflow: hidden;
}

nav {
    margin: 27px auto;
    width: 800px;
    height: 46px;
}

.logo {
    float: left;
}

.navbar {
    margin-left: 20px;
    float: left;
    line-height: 46px;
}

.navbar ul {
    list-style: none;
}

.navbar li {
    padding-left: 12px;
    float: left;
}

.navbar a {
    line-height: 42px;
    display: inline-block;
}

.navbar a:hover {
    border-bottom: white solid 2px;
}

.search {
    margin: 6px 0;
    height: 34px;
    float: right;

}

.search input[type = text] {
    width: 180px;
    height: 32px;
    float: left;
    border: 1px solid #00a4ff;
}

.search input[type = submit] {
    width: 38px;
    height: 34px;
    float: left;
    border: none;

    background: #00a4ff url(../学成网/images/search_06.png) center center no-repeat;
}
.search input[type = submit]:hover {
    background-color: aquamarine;
    -webkit-transition: all 200ms;
    -moz-transition: all 200ms;
    -ms-transition: all 200ms;
    -o-transition: all 200ms;
    transition: all 200ms;
}

.person {
    float: right;
    margin: 8px 0;
    height: 32px;
    line-height: 32px;
}

.person img {
    float: left;
}

.person span {
    float: left;
    line-height: 32px;
    display: inline-block;
}

#banner {
    height: 420px;
    width: 1200px;
    position: relative;
    background: #fff url(../学成网/images/banner_03.png) center center no-repeat;
}

.point {
    position: absolute;
    left: 50%;
    margin-left: -48px;
    bottom: 20px;
}


.point li {
    float: left;
    width: 12px;
    height: 12px;
    margin-left: 12px;
    border-radius: 6px;
    background-color: #ff3211;
}

.point .current {

    width: 18px;
    height: 12px;
    margin-left: 12px;
    border-radius: 6px;
    background-color: #4dff8f;
}
.container {
    margin: 0 auto;
    background-color: #fff;
}

#slide {
    width: 180px;
    height: 420px;
    background-color: rgba(0, 0, 0, 0.3);
    float: left;
}

#slide a {
    display: inline-block;
    padding-left: 22px;
    padding-right: 12px;
    line-height: 42px;
    height: 42px;
    width: 180px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    border-bottom: 1px solid #000;;
}

#slide a {
    color: white;
}

#slide span {
    float: right;
}

#slide a:hover {
    color: #1c036c;
}

.tips {
    width: 240px;
    height: 300px;
    margin: 50px 50px;
    padding: 12px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    float: right;
    background-color: white;
}

.tips dt {
    height: 45px;
    line-height: 45px;
    margin-bottom: 10px;
    color: white;
    background-color: #9bceea;
    text-align: center;
}

.tips dd {
    width: 200px;
    height: 60px;
    margin: 0 auto;
    padding-top: 10px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    border-bottom: 1px solid #ccc;
    overflow: hidden;
}
.tips dd:last-child {
    border-bottom: none;
}

.tips a {
    display: block;
    height: 38px;
    text-align: center;
    line-height: 38px;
    color: aqua;
    border: 1px solid aqua;
}

.tips h4 {
    color: #5e5e5e;
    font-size: 16px;
}

.container {
    width: 1200px;
    margin: 0 auto;

}
.recommand {
    overflow: hidden;
    background-color: white;
    -webkit-box-shadow: 0px 2px 2px 2px #cccccc;
    -moz-box-shadow: 0px 2px 2px 2px #cccccc;
    box-shadow: 0px 2px 2px 2px #cccccc;
}
.recommand ul {
    list-style: none;
    float: left;
}

.recommand ul li {
    float: left;
}

.recommand a {
    line-height: 25px;
    height: 25px;
    padding: 12px 30px;
    display: inline-block;
    background: #fff url(../学成网/images/ling_06.png) center right no-repeat;
}


.course {
    margin-top: 20px;
}

.course .tab {
    height: 50px;
    line-height: 50px;
}
.course .vip-course {
    line-height: 50px;
    height: 50px;
}
.course .all-course{
    line-height: 50px;
    height: 50px;
    float: right;
}
.course-list li {
    margin-top: 6px;
    margin-bottom: 20px;
    width: 228px;
    height: 270px;
    float: left;
    margin-right: 15px;
    box-shadow: 0px 2px 2px 0px #cccccc;
}
.course-list li:hover {
    margin-top: 0px;
    box-shadow: 0px 4px 4px 4px #cccccc;
    transition: all 400ms;
}
.course-list li:nth-child(5n) {
    margin-right: 0;
}


.course-list img {
    width: 228px;
}

.course-info {
    padding: 16px 20px;
}

.course-info .category {
    color: #ff7c2d;
}

#footer {
    margin-top: 20px;
    margin-bottom: 20px;
}
.left {
    height: 250px;
    padding: 40px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    position: relative;
    float: left;
}
#footer .left p{
    width: 300px;
}

.download {
    position: relative;
    margin-top: 12px;
    padding: 6px 12px;
    display: inline-block;
    border: 1px solid lawngreen;
}
.download:hover .erweima{
    visibility: visible;
}
.erweima {
    position: absolute;
    left: 100px;
    visibility: hidden;
}
.right {
    float: right;
}


.right dt{
    height: 40px;
    line-height: 40px;
}

.right dl {
    width: 160px;
    float: left;
}
